diff --git a/connections/c/nc.cc b/connections/c/nc.cc
index 53728843..43ae61e2 100644
--- a/connections/c/nc.cc
+++ b/connections/c/nc.cc
@@ -34,6 +34,7 @@
 #include "connections/connection_options.h"
 #include "connections/core.h"
 #include "connections/discovery_options.h"
+#include "connections/implementation/flags/nearby_connections_feature_flags.h"
 #include "connections/listeners.h"
 #include "connections/medium_selector.h"
 #include "connections/out_of_band_connection_metadata.h"
@@ -800,6 +801,10 @@ int NcGetLocalEndpointId(NC_INSTANCE instance) {
 
 void NcEnableBleV2(NC_INSTANCE instance, bool enable,
                    NcCallbackResult result_callback, CALLER_CONTEXT context) {
+  nearby::NearbyFlags::GetInstance().OverrideBoolFlagValue(
+      ::nearby::connections::config_package_nearby::nearby_connections_feature::
+          kEnableBleV2,
+      enable);
   result_callback(NC_STATUS_SUCCESS, context);
 }
 
diff --git a/connections/c/nc.h b/connections/c/nc.h
index b3dd2505..1265fcba 100644
--- a/connections/c/nc.h
+++ b/connections/c/nc.h
@@ -181,7 +181,8 @@ NC_API void NcInitiateBandwidthUpgrade(NC_INSTANCE instance, int endpoint_id,
 // Gets the local endpoint generated by Nearby Connections.
 NC_API int NcGetLocalEndpointId(NC_INSTANCE instance);
 
-// Enable/Disable BLE V2 advertising. The method is deprecated.  It's a no-op.
+// Enable/Disable BLE V2 advertising. The method should be deprecated after
+// BLE V1 deprecated.
 NC_API void NcEnableBleV2(NC_INSTANCE instance, bool enable,
                           NcCallbackResult result_callback,
                           CALLER_CONTEXT context);
diff --git a/connections/implementation/flags/nearby_connections_feature_flags.h b/connections/implementation/flags/nearby_connections_feature_flags.h
index 1ca549d6..dfaded1f 100644
--- a/connections/implementation/flags/nearby_connections_feature_flags.h
+++ b/connections/implementation/flags/nearby_connections_feature_flags.h
@@ -49,6 +49,9 @@ constexpr auto kEnableBleL2cap =
 // Enable/Disable BLE medium injection.
 constexpr auto kEnableBleMediumInjection =
     flags::Flag<bool>(kConfigPackage, "45743128", false);
+// Disable/Enable BLE v2 in Nearby Connections SDK.
+constexpr auto kEnableBleV2 =
+    flags::Flag<bool>(kConfigPackage, "45401515", true);
 // Enable/Disable DCT advertising/scanning specification.
 constexpr auto kEnableDct =
     flags::Flag<bool>(kConfigPackage, "45697202", false);
diff --git a/connections/swift/NearbyCoreAdapter/Sources/GNCFlags.mm b/connections/swift/NearbyCoreAdapter/Sources/GNCFlags.mm
index 8c32211c..7b5cb6ba 100644
--- a/connections/swift/NearbyCoreAdapter/Sources/GNCFlags.mm
+++ b/connections/swift/NearbyCoreAdapter/Sources/GNCFlags.mm
@@ -24,12 +24,13 @@
 @implementation GNCFlags
 
 + (BOOL)enableBLEV2 {
-  // This is deprecated. It's a no-op.
-  return true;
+  return nearby::NearbyFlags::GetInstance().GetBoolFlag(
+      nearby::connections::config_package_nearby::nearby_connections_feature::kEnableBleV2);
 }
 
 + (void)setEnableBLEV2:(BOOL)value {
-  // This is deprecated. It's a no-op.
+  nearby::NearbyFlags::GetInstance().OverrideBoolFlagValue(
+      nearby::connections::config_package_nearby::nearby_connections_feature::kEnableBleV2, value);
 }
 
 @end